-1

Please first see Why are 15 reputation points required to upvote?

There are so many answers. But in one answer (https://meta.stackexchange.com/a/226994/256103), the background color is changed. But that not deleted and there have I didn't see any information.

See this screen:

enter image description here

Why? What was the meaning for this type of answers? Or is it bug?

4

See that -5 next to that answer?

Those are downvotes. A bunch of people seem to think this answer is bad or incorrect or so.

The system automatically gives answers with lots of downvotes a different color to make it clear that the community doesn't think these are good and to distinguish bad from good.

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